header{
   .nav{
    background-image: url(../img/个人中心.jpg);
    background-size: 100% 100%; 
    background-repeat: no-repeat;
    background-position: center center;
    img{
        width: 60px;
        height: 60px;
    }
   }
}
main{
    .resume{
        .list{
            .item{
                img{
                    height: 30px;
                    width: 30px;
                }
            }
        }
    }
}
footer {
    bottom: 0;
    z-index: 2;
  }